body{
	padding: 0;
	margin: 0;
}
		.test1{
				background-color: red;
			}
			.test2{
				width: 50%;
				height: 100px;
				background-color: #000000;
			}
			.test3{
				background-color: #00FFFF;
			}
			.t{
				width: 100px;
				height: 100px;
			}
			
			#main{
				display: flex;
				height: 500px;
				flex-direction: row;
				background-color: #7FFF00;
			}